Envelop.



J. J. TISHLER.

VENV'ELOI. nrmouml Hmm on'r. 1a, 1907. nmmwxn rms. 2. 190s.

Patented June 29, 1909.

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ENvELoP.

Specification of Letters Patent.

Pateneedpruaeas, i909.

Application led'Oetober'I2, 1907, Serial No. 397,178. Renewed; February2, 1909 Serial No. 475,693.

To all whom t may concern.'

Be it known that I, JULIUs J. '.llrsi-ILER, a citizen of the UnitedStates, residing at Port Chester, in the county of VJestchester, Stateof New York, have invented certain new and useful Improvements inEnvelops; and I do hereby declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same. Y

This inventionrelates to new and useful improvements in envelops and ithas more particular reference to a safety envelop constructed with thepurpose of preventing fraudulent manipulation, opening or tamper* ingwith during its transmission through the mail. y

l In connection with an envelop ofthe above type, the invention aims asa primary object to provide a novel construction, combination andarrangement of features, to consti- `tute as an entirety, a novelsealing device.

The details of construction will appear in the course of the followingdescription, in

` which reference is had to the accompanying drawings., forming a partof this specification, like characters of reference designating' similarparts, throughout the several views, wherein i Figure 1 is a plan viewof the blank from which the present envelop is formed. Fig. 2

is a plan view showing the blank partly folded. Fig. 3 is a 4rearelevation showing the envelop sealed. Fig. 4 is a section on the line 44 of Fig. 43.

In the accompanying drawings, the envelop blank is shown as comprising abody 5,

an upper flap 6, a lower flap 7 and side flaps 8 and 9. The flap `9 isconstructed with a `tongue 10 projecting at right angles centrally fromits upper edge and foldahle upon the inner face of said flap 9 along aline of scoring 11. The flap 9 is provided at a slight distance from itsupper edge with a slotted opening 12 through which the tongue `10 ispassed after having been folded, the

material between the line of scoring 11, and the opening 12 constitutinga web 13 which overlies said tongue in the folded relation of thelatter. The tongue 10 in its folded relation has its outer or exposedface preferably gummed` as at 14. The side flap 8 is constructed with alongitudinal slit 15 and the lower flap 7 is constructed with alongitudil nal slit 16, which, in the folded relation of the parts iscoextensive and coincident with the slit 15. The upper flap 6 is formedcentrally thereof with a projecting tongue 17 having its inner facegummed as at 18.

In using the envelop, the flap 9 is folded the flap 9, and the flap 7 isfolded upon the flap 8, it being understood that the tongue 10 has beenpreviously folded upon the line of scoring l] with its end portioninserted through the opening 12.

It is preferred to form the material struck out from the opening 12 asan auxiliary flap 10, which is` folded upon the outer face of the flap 9along the lower edge of said opening 12 and which is gummed to adhere tothe tongue 10 in the folded relation of the latter. TWhen the parts havebeen thus assembled, the letter or other matter to be mailed is placedin the pocket formed by the body 5 andthe several iaps folded thereuponand the flap 6 is then folded upon the flap 7 in which operation, thegummed surface 18 of the flap 17 having been previously moistened, theflap 17 is inserted inwardly through the slits 16 and 15 intheir'coincident relation, until the end portion thereof overlaps theend portion of the flap 10, the gumming 18 causing the end portions ofsaid respective flaps 17 and 10 to adhere to one another. It will thusbe seen that any attempt to open the envelop will result in mutilatingthe same so that the attempt will be immediately discovered. Suchmutilation will readily occur by virtue of the provision of the weakenedweb portion 13, the confines of which are indicated by dotted lines, andby virtue of the sealing of the flaps 10 and 10 to one another as wellas of the sealing of the flaps 1 7 and 10 to one another, and of theengagement of the flaps 17 through the slits 16 and 15.

The invention is simple in its structural details, inexpensive tomanufacture, and practical and eflicient in use.

Vllhat is claimed is:

An envelop of the type set forth, com rising a body portion providedwith side aps, an upper flap and a lower flap, one of said side fapshaving formed centrally thereof and projecting from `its upper edge atongue and having at some distance below said upper edge and in a linewith said tongue, a slotted opening, said tongue being foldable upon theinner face of the side flap by which upon the body 5, the lflap 8 isfolded upon` it is carried and being formed for insertion l signed tooverlap and to be sealed to the pro- 10 through said slotted opening,the other side jeeting end portion of said first named tongue. ap andthe lower ila being foldable upon In testimony whereof7 I affix mysignature, said first named side ap and being formed in presence of twowitnesses.

with coincident slits, the upper Hap being J-ULIUS J TISHLER formed witha projecting tongue having its inner fece gurnrned, said last namedtongue Witnesses: being formed for insertion through said slits DAVID J.KELLY, Jr., in their coincident relation and being de- J. B. MONETT.

